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A264370
Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having directed index change 0,0 0,2 1,0 or -1,-2.
1
1, 129, 16641, 418992, 10549504, 353333680, 11834176225, 371455955580, 11659411209744, 368071661804736, 11619518840752384, 365901756932584896, 11522344217627105424, 362249271223489619136, 11388701120488963432704
OFFSET
1,2
COMMENTS
Row 6 of A264364.
LINKS
EXAMPLE
Some solutions for n=3
..0..1..2..3....6..7..2..1....6..1..0..3....6..7..0..3....0..1..2..3
.10..5..4..7....0.11..4..3...10..5..2..7....4..1..2..5....4..5..6..7
.14..9..6.11...14..5..8..9....4..9..8.11....8..9.10.11....8..9.10.11
..8.13.12.15...12.13.10.15...18.13.14.15...12.19.14.13...18.19.12.15
.16.17.18.19...22.23.16.17...12.23.16.17...22.17.16.15...16.13.14.17
.26.27.20.21...20.27.18.19...20.21.22.19...26.27.18.23...20.27.22.21
.24.25.22.23...24.21.26.25...24.25.26.27...20.21.24.25...24.25.26.23
CROSSREFS
Cf. A264364.
Sequence in context: A334360 A342897 A239824 * A196752 A143006 A176368
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 12 2015
STATUS
approved